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Finding the Fourth Proportional to 671.61, 926.80 and 376.87

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Solution

The fourth proportional to 671.61, 926.80 and 376.87 is: 520.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.61 : 926.80 = 376.87 : x
  2. Step 2: Convert to fraction form
    671.61/926.80 = 376.87/x
  3. Step 3: Cross multiply
    671.61x = 926.80 × 376.87
  4. Step 4: Simplify right side
    671.61x = 349,283.12
  5. Step 5: Solve for x
    x = 349,283.12/671.61
  6. Step 6: Final answer
    x = 520.07

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.